staging: rtl8192u: put parentheses on macros with complex values in r8192U_hw.h

Fix "Macros with complex values should be enclosed in parentheses" checkpatch error.

Signed-off-by: Manikishan Ghantasala <manikishanghantasala@gmail.com>
Link: https://lore.kernel.org/r/20210602193334.11687-3-manikishanghantasala@gmail.com


Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>